Export emails, contacts, and calendar items to Outlook using a .pst file
Export Outlook email, contacts, and calendar to move them to another computer or so that you can make a backup of your information.
Create an Outlook Data File (.pst) to save your information
If your online mailbox is nearly full, you can export some items to an Outlook Data File (.pst). You can also use these files to create archives, project files, or backups from any Outlook account.
Back up your Outlook email - Microsoft Support
Select File > Open & Export > Import/Export. Select Export to a file, and then select Next. Select Outlook Data File (.pst), and select Next. Select the mail folder you want to back up and select Next. Choose …
Export your Outlook.com mailbox - Microsoft Support
You can export your Outlook.com mailbox to a .pst file using new Outlook for Windows or classic Outlook for Windows, or export to a .olm file using legacy Outlook for Mac.
Import and export Outlook email, contacts, and calendar
Find the information you need to import to or exporting from Outlook, whether you're using Office 365, Outlook 2016, or a Mac.
Import and export email, contacts, and calendar in Outlook for Mac
Learn how to import and export email, contacts, and calendar items in Outlook for Mac
Import email, contacts, and calendar from an Outlook .pst file ...
.Pst files are created when you export or back up email, contacts, and calendar to an Outlook .pst file. Outlook makes a copy of your email to the .pst file. See Fix problems importing an Outlook .pst file …
Create an Outlook Data File (.pst) to save your information
If your online mailbox is nearly full, you can export some items to an Outlook Data File (.pst). You can also use these files to create archives, project files, or backups from any Outlook account.
Open and find items in an Outlook Data File (.pst)
Describes how to investigate items in an Outlook Data File (.pst) and troubleshoot search issues.
Back up your Outlook email - Microsoft Support
Select File > Open & Export > Import/Export. Select Export to a file, and then select Next. Select Outlook Data File (.pst), and select Next. Select the mail folder you want to back up and select Next. Choose …
Open and close Outlook Data Files (.pst) - Microsoft Support
Open and close Outlook Data Files (.pst) that contain copies, archives, or backups of your Outlook information.